<template>
  <el-row class="tac">
    <el-col :span="24">
      <el-menu default-active="2" class="el-menu-vertical-demo"
               @open="handleOpen"
               @close="handleClose"
               unique-opened
               router
               background-color="#545c64"
               text-color="#fff"
               active-text-color="#ffd04b">
        <el-submenu  v-for="item in menu"  :index="item.id" :key="item.id">
          <template slot="title">
            <span v-text="item.name"></span>
          </template>
          <el-menu-item-group class="over-hide" v-for="sub in item.sub" :key="sub.componentName">
            <el-menu-item :index="sub.componentName" v-text="sub.name"></el-menu-item>
          </el-menu-item-group>
        </el-submenu>

      </el-menu>
    </el-col>
  </el-row>
</template>

<script>
  import menu from '../config/menu-config'
  export default {
    name: "NavMenu",
    data () {
      return {
        menu: menu
      }
    },
    methods:{
      handleOpen (key, keyPath) {
        console.log(key, keyPath)
      },
      handleClose (key, keyPath) {
        console.log(key, keyPath)
      }
    }
  }
</script>

<style scoped>
  .over-hide {
    overflow: hidden;
  }
</style>
